ST1PS02 datasheet(11/23 Pages) STMICROELECTRONICS

Part #	ST1PS02

Description	400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch

PDF	23 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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11 / 23 page

Typical performance characteristics

Figure 4. Efficiency vs load, VOUT = 1.8 V

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.001

0.01

0.1

100

1000

Load current [mA]

Vin 2.8V

Vin 3.2V

Vin 3.6V

Vin 4.2V

Vin 5V

L= 2.2 µH

Cout = 10 µF

Figure 5. Efficiency vs VIN, VOUT = 1.8 V

50%

55%

60%

65%

70%

75%

80%

85%

90%

95%

2.8

3.3

3.8

4.3

4.8

Input voltage [V]

Iout 100µA

Iout 1mA

Iout 50mA

Iout 100mA

Iout 200mA

L = 2.2 µH

Cout = 10 µF

Figure 6. Efficiency vs load, VOUT = 2.5 V

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.001

0.01

0.1

100

1000

Load current [mA]

Vin 3.2V

Vin 3.6V

Vin 4.2V

Vin 5V

L=2.2 µH

Cout=10 µF

Figure 7. Efficiency vs VIN, VOUT = 2.5 V

50%

55%

60%

65%

70%

75%

80%

85%

90%

95%

100%

3.2

3.4

3.6

3.8

4.2

4.4

4.6

4.8

Input voltage [V]

Iout 100µA

Iout 1mA

Iout 50mA

Iout 100mA

Iout 200mA

L=2.2 µH

Cout=10 µF

ST1PS02

Typical performance characteristics

DS13206 - Rev 1

page 11/23

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